Effects of DC Power Flow Controller On DC Power Network Loss

The DC power flow controller can effectively enhance the control freedom and the stability in DC grid. In this paper, a three-terminal HVDC system is taken as an example to complete the network loss modeling with single DC power flow controller. Based on this model, the multiple DC power flow controllers have been used in the DC grid to reduce the network loss by adjusting their parameters properly. Compared with the traditional multi-terminal DC system without the DC power flow controller, the network loss can be significantly reduced.